<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>test</title>
	<style>
		.testdaom{
			width: 80%;
			padding: 20px;
			border: 2px solid #f40;
			margin: auto;
			text-align: center;
		}
		.testdaom:hover{
			background: #eee;
		}
	</style>
</head>
<body>
	<div class='testdaom'>
		index的test
	</div>
</body>
</html>